Drafting and modeling vessels



UNITED sTATEs PATENT oEEicE.

HENRY C. DEPUTY, OF MICHIGAN CITY, INDIANA.

DRAFTING AND MODELING VESSELS.

Specicaton of Letters Patent No. 11,416, dated August 1, 1854:.

T0 all whom t may concern Be it known that I, HENRY C. DEPUTY, of Michigan City, in the county of Laporte, in the State of Indiana, have invented a new and Improved Mode of Drafting and Model ing Vessels of all Kinds Propelled by Sails, Steam, or Any other Power; and I do'hereby declare that the following is a full and eXact description thereof. (See the accompanying drawings and explanation thereon.)

The nature of my invention consists in drafting and modeling vessels of all kinds by rule (after the general outlines are given) which will produce a perfect and superior shape, for speed, beauty, and sea qualities, taking ofi', and leaving on every inch necessary.

To enable others skilled in the art to make use of my invention, I will proceed to describe the principle. First; I draft my dead-flat frame (marked thus O) in any of the known forms, and then run diag'onals from equal divisions around the 'dead flat frame from the ioor head to the bottom of the wale to equal divisions from a re- 'verse angle of the floor up the stem to the bottom of the wale. ascertain the bottom of the wales `by a parallel line with the top of the bulwark, waist, and wale, if they are to be of a width; if not, then accordingly; other upper streakssuch as port streak-may be run the same way. The length of these diagonale I transfer to the O o'f a half breadth plan, and strike right angle sweeps from those diagonal settings off to intersect the diagonal endings up the stem, then I transfer back to the body plan the intersection of 4those sweeps with the several different frames, which gives the shape of each frame in the body plan. The

t stern in the same manner if the same shape on the top (or sharp) if not as the bow but square, or semielliptic; the rule varieswhen it comes in contact with these shapes, viz., the shear line intersects the after perpendicular at a greater height than in the fore body. The distance from the after perpendicular (or stern post) on the diagonals to the intersecting the transom must be deducted froin the whole length of said diagonals in order to find the ending of those diagonals. Also the reverse angle of the floor is raised to a parallel with the first division of diagonals; this is for a transom of the beam and licor. Then I set 'off the intersecting of the water lines (in the body plan) with each frame to a half breadth plan which is seen in the drawing (the one with the fewest sweeps) which gives the shape of each piece in the model before putting them together. The pieces in the fore body model are shaped by the above rule-it also shows the eXact concavity of concave water lines-,or I can apply patterns struck by those diagonal sweeps to a solid, or to a pieced model, being careful to apply them correctly. The general outlines Aneed to be good, as much so as in a frame building. Then this rule may be depended upon, as much as the square rule in framing a house. y A vessel may be drafted to a certainty without a model. What I term general outlines, are the length, beam, depth, shear, stem and stern, and the shape and location of the dead flat frame. A knowledge of this system will facilitate ship building especially where perfection is required.

Vhat I claim as my invention and desire to secure by Letters Patent, is-

The application of diagonals to drafting and .modeling all kinds of vessels, propelled by sails, steam or otherwise. Also the prnciple by which the exact concavity of concave water lines is determined, viz., by transferring the intersections of the water lines (in the body plan) with each frame to a half breadth plan which is seen in the drawing (the one with the fewest sweeps).

HENRY C. DEPUTY.

Signed in presence of- I. S. BLIGELOW, W. BAKER. 

